Fire-door.



W. B. GERVAIS.

FIRE DOOR.

APPLICATKON FILED MAR 7. 1914.

Patented Mal 19, 1948.

'1- SHEETS-SHEET 1.

W. B. GERVAIS.

FIRE DOOR.

, APPLICATION FILED MM. 7. I914.

Patented Mar. 19, 1918.

4 SHEETSSHEET 2.

W. B. GEHVMS.

FIRE DOOR.

APPLFCAHON FILED MAR. 1, 1914. 1,260,182. Patented Mar. 19,1918.

4 SHEETS-SHET 3.

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5 /4 C- M a? W. B. GERVAIS.

FIRE DOOR.

APPucAnoN FILED MAR. I. 1914 Patented Mar. 19, 1918.

4 SHEETS-SHEET 4.

'02 we .m drzwr'y f g as ruaw UNITED STATES PlgllENT OFFICE.

wnrrwmen'r B. emwns, or onzoaeo, rumors, ASSIGNOB, T0 VARIETY Mummeruiune column, or CHICAGO, ILLINOIS, A CORPORATION or rumors FIRE-DOOR.

Speoifiuation of Letters Patent. Patented Dial. 19, 1918.

Application filed mama 7, 1914. Serial no. 823,210.

Improvement, in Fire-Doors, of which the following is a specification.

This invention relates particularly to the doors which are adapted for use more especially as elevator-doors for the shafts of freight elevators, althought the invention is not limited to this particular use.

The primary object of the invention is to provide a. door of improved construction and operation, having special provisions to afford greater securit against fire and greater durability of t e door.

The invention is illustrated in the preferred embodiment in the accompanying drawings, in which-P Figure 1 represents an inner broken elevational view of the wall of an elevator shaft, equipped with my. improved door; Fig. 2, a broken horizontal sectional view taken as indicated at line 2 of Fi 1 and showing a continuously interlocke guidedevice employed for maintaining the intermediate portions of the door-sections in close engagement with the wall; Fig. 2* and Fig. 2", similar sectional views showing modified forms of guide-devices; Fig. 3, a perspective View of the combination guidemember and stop shown in Fig. 2; Fig. 4, an elevational view of the upper door-section; Fig. 5, an elevational view of the lower door-section; Fig. 6, a vertical sectional. view taken as indicated at line 6 of Fig. 1; Fig. 7 a broken horizontal section taken as indicated at line 7 of F 1; Fig. 8, a view similar to Fig. 1, but showing the door in one section only; Figs. 9 and 10, broken detail sectional views at the top and bottom, rcspectively, taken as. indicated at the corrc spending lines of Fig. 8; Fig. 11, a view showing the invention applied to a horizontally-sliding door: and Figs. 12, 13, and 14, broken sectional views taken as indicated at the corresponding lines of Fig. 11.

In the construction illustrated, A represents the wall of an elevator-shaft having a door-opening A; B, B, vertical guides connected with the inner surface of; the wall A and extending along the lateral margins of the door-opening; C, C, lower and upper door-sections, respectively, movable in the guides B, B, said lower and upper door-sections being oined by flexible connections C, whereby said door-sections serve to counterbalance each other in a well understood manner; I), latching mechanism connected with the lower door-section; and D, a cen; tral latch cooperating with the latching mechanism D. l

The construction of the wall A may be of any approved type. The guides B may be of any suitable construction. As shown in Fig: 7, each guide B is formed to afi'ord between it and the wall a space or guide-channel 1, which receives the lateral guidefianges of the door-sections.

In the illustration given in Figs. 1, 2, 4, 5 and 6, each. door-section is formed of vertically corrugated metal plates 2, the vertical accnt edge-portions of which are secured to flanged channel-members 3, and the outer marginal portions of which are bound by an angle-bar 4. The lateral edge-portionsof each doorsection have connected therewith angle-bars 5 whiih have outturned flanges 5 adapted to move in the spaces or channels 1 of the lateral guides B,. understood from Fig. 7..

as will be clearly The flanges 5 are split at their upper and lower ends in the illustration given and the several portions are bent outwardly to lif ford bearings 6.

The flanged channel-bars 3 serve both as stiffening or reinforcing members for the door-section, and also afford vertical grooves, or channels, 3", as shown in Figs. 2 and 6, which are adapted to accommodate upper and lower binding members, or binding guide-members 7 and 8, respectively, which continuously project into said channels, when the doorsections are moved in opening or closing the same. In the form illustrated in Figs. 1, 2 and 6, the member 7 has a reduced shank-portion 7 and an enlarged hook-portion 7; and the corresponding journalbar 3 has its base-portion contracted or made of dovetail form, as indicated at 7 so that as the door-section moves with respect to the member 7, it will be continuously bound or held to the wall. lhe upturned hooloportion 7 h is adapted to interlock with the upper binding member or angle-bur 4 when the door-section is in its lowered. position, as indicated in Fig. 6;

, with a guide-member niith downturned hook-portion 8'" which moves in the dovetailed groove 3, *the member engaging the lower angle-bar a when the lower door-section C is in the elevated position.

From the fore oing, it will be understood that the interm iate pprtions of the doorsections are bound or old to the wall, regardless of whether the door-sect1ons are moving, orare disposed in either the opened or closed position.

The connections G comprise rods 9 connected with the upper corners of the lower door-section; chains 10 connected with the upper ends of said rods and with the lower corners of the upper door-section, and wheels 11 carried by t e uides B and over which the chains pass. us the door-sections are adapted to counter-balance each other in a wellainderstood manner.

The latch mechanism D is adapted to sag i ort the lower door-section on the guides and the central latch device D is adapted to lock the door-sections together, the latchdevice D being released in the operation of releasin the latch mechanism D. No claims or the latch mechanism are pro-- sented in this application.

The lower portion of the upper door-section is equi ped with an astragal 12, which afiords a ang which embraces the outer surface of the pper binding member 4 of the lower door-section in the manner shown in Fig. 6; and the upper door-section is also equipped at the lower ends of the channel members embrace the up or member l of the lower door-section as s own in Fig. 6. Thus, when the door-sections are together, a protected joint is afforded; and, as above indicated, the door-sections are bound to the wall above and below. the door-o ening by the binding guide-members 7 an 8, which permit the door-sections to be readily opened and closed, to bind them at intermediate points to the wall, while permitting the sliding action.

Fig. shows a reversal of the parts shown in Fig. 2, as well as a modified structure of the parts. 'In this construction, 7 represents the stationarily-mounted guide-member corresponding with the guide-member 7 g and 3 represents an intermediate guidemcmber carried by the door-section C. Here, the door-carried guidesmember 3 is of T-form, and the head of the T engages a T-slot in the stationarily-mounted guidemember 7".

In Fig. 2, the door-section G is equipped 3 which affords a T- slot; and the stationarily-mounted guidemcmber 7 has a shank and head of T-form, havingi slidable interlocking engagement t 1e guide-member 2?,

In each case, the door-section is preferably composed of corrugated sheet-metal plates connected with the intermediate vertical 3 with angular members 13 which guide-members with which the door-sections are equipped.

In each case, also, the sliding interlocking connection is maintained between the doorcarried guide'members and the stationary guide-members atall times, so that thereis no possibility of their ever becoming en aged.

mm the description given, it will be understood that-the improved door affords great security against fire, and is strong and durable; bucklin of the door, or bowing of the same away rom the wall is effectually prevented, and any gapping, which might possibl' permit the passage of flames in time 0 fire, is obviated.

In the construction illustrated in Figs.

8 40, the door C is a verticallyslidable door movable in lateral guides 14 adapted to be lifted, by counter-weights 15. The door C is virtually of integral construction, and is preferably formed of corrugated sheet-metal plates 16 connected by vertical channelmembers, or guides, 17. The intermediate guides 17 extend from the top to thebottom of the door and are engaged by binding guidemcmbers 18 which are stationarily mounted above the door-opening i r, in the manner shown in Fig. 9. The guide memhers 18 are similar to the guide-members 7 and engage the guides 17 in the same mean nor that the guides 7 engage the guides 3, as shown in. Fig. 2. The door C is preferably provided at its lower end with pins 19 which engage sockets in the angle 20 which provides a marginal member at the bottom ofthe door-opening, in the manner shown in Fig. 10.

The guides 14 are equipped with stops 21 engaged by latch-bars 22, which some to hold the our in a closed position against the force exerted by the counter-weights 15.

In the construction shown in Figs. 1144, the door C" is virtually of inte ral construction and is supported from a iorizontallydisposed track 23 disposed above the dooropening. In this case, the horizontallymovable door is PIOX'ldBd with horizontal intermediate guide-members 24, which are continuously enga ed by stationary guidemembers 25 moun ed on the wall A at one side of the door opening A, as is shown in Figs. 13 "and 14. The guides 2A are similar to the guides-3 shown in Fig. 2, while the stationary guides 25 are similar to the guides 7 shown in Fig. 2.

At the opposite vertical edge of the door, the wall is equipped with stops 26 having projections 26 adapted to embrace the outer margin of the door, in the manner shown in gaged by stationary guide-members while the door is being opened and closed and lot) naeouea while the door is in the opened or closed position.

It may be m: itjoned that by means of the continuous b nding or interlocking-engagewill hold it close to the wall and prevent assage of, flame, the astragal 12 serving at the same time to prevent passage of the flameat the meeti edges 0 the door-sections; fourth in t e horizontally divided door, when the upper angle of the lower section is at the bottom of he door-opening, the downturned hook 8* will not engage the vertical flange of the member 4, but the door will nevertheless be bound close to the wall bf reason" of the continuous interlocking s iding engagement employed; fifth, the continuous the binders and the intermediate guide members tends to prevent racking of the door in its own plane, and thus to prevent sticking of ,the door at the lateral edge guides.

The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, but the appended claims should be construed as broadly as permimible.

What I regard as new and desire to secure by Letters Patent is- 1 1. In a dorr of the character set forth, the combination of a pair of lateral guides, a pair of door-sections vertically slidable therein, each door-section rovided with an intermediate vertical gui e-clip, a guidemember carried by the wall above the dooropening and having continuous interlocking slidable engagement with the interme diate guideqnember of the upper door-section, and a guide-clip carried by the wall below the door-openin and having continunus slidable interloc ing engagement with the intermediate guide-member of the lower door-section.

2. In a door of the character set forth, the combination of a wall provided with a door-opening, and oquipp a above and below said door-opening with a pair of guide clips and equipped also with lateral vertical guides flanking said door-opening, of a pair-of door-sections slidable in said lateral guides, each door-section having an intermediate vertical guidamember, the guide-memhcrs of the door-sections being in continudoor-opening and equipped above and interlocking engagement between ous slidable binding engagement with said guide-clips.

3. In a door of the character setforth, the combination of a wall provided'with a door-opening and equippedabove an intermediate portion of said door-opening with a guide-clip and equipped also with lateral vertical guides flanking said door-opening and extending above the same, a door-section vertically slidable in said lateral guides and having an intermediate vertical channel-member forming a part of the door and afiording a guide-groove having a contract ed slot-like opening, and'a guide-clip secured to the wall above said opening and having a head-portion confined in the guidegroove of said channel-member, whereby continuous bindin engagement between the door-section and t e lintel is maintained.

4. In a door of the character set forth, the combination with a wall provided with):

low said door-opemng with a pair of ide- .clips and equipped also with vertica lateral guides flanking said door-opening, a pair of door-sections movable in said lateral guides, each comprising corrugated sheet-metal plates, channel members secured to said plates at their meeting edges and having contracted openingli, sai uide-clips having shanks extendin t rough said openings and having hea ortions interlockingly engaging the gui e-members of the door-sections, and perimetral binding memhers at the upper portion of the upper doorsection and the lower portion of the lower doorsection adapted to be engaged by said guide-olips when the door-sections are in closed position.

5. The combination with two door see- I tions mounted to slide vertically from and toward each other in the same vertical plane, one section being adapted to move to the sill of the door opening to be closed by said doors, and the other to move to the lintel of said opening, of a recessed shoe attached to the lintel of the door opening, a guide membar on the upper door section exten from the upper edge to the lower edge 0 the same and fitting said shoe, a recessed shoe secured directly below the sill of the door opening, a guide member attached to the lower door section and extending from the upper to the lower edge of the same, which guide member is engaged b the last said shoe, all substantial v as escribed whereby both door sections 1 strengthenm and stiffened between the bile edges.

WAINWRIGHT B. GERVAIS. 

